#4 Careful with their private and social life
Cheaters live a dual life. They are very specific about what to post on social media and what not. They have a private life and any variety of interference makes them aggressive.
#5 Secretive in nature
Passwords for cell phones, Laptops and other devices. They do not let you pick up any of their phone calls.
#6 Trustworthy People around them
Cheaters have a habit of forming good relations with people on whom they can trust upon.